Motor-cycle frame.



E. MULLER.

MOTOR UYGLE FRAME.

APPLICATION FILED MAR. 20, 1910.

Patented Feb. 14, 1911 mw/wto/o E a/ramz Pia ZZe i' EPHRAIM MULLER, OFOAKLAND, CALIFORNIA.

MOTOR-CYCLE FRAME.

To all whom it may concern:

Be it known that I, EPHRAIM MULLER. a citizen of the United States,residing at Oakland, in the county of Alameda and State of California,have. invented certain new and useful Improvements in Motor- CycleFrames. of which the following is a specification, reference being hadtherein to the accompanying drawing.

This invention relates to frames for motor cycles, and the principalobject of the same is to provide a frame of great strength combined withease of riding, in which a novel system of springs are provided forabsorbing the shocks and jars incidental to the use of the frame.

ln carrying out the objects of the inven tion generally stated above itwill be understood, of course, that the essential features thereof arenecessarily susceptible of changes in details and structuralarrangements, one preferred and practical embodiment of which is shownin the accompanying drawings, wherein Figure 1 is a perspective view ofthe improved frame. Fig. 2 is a detail sectional view taken on the lineA A, Fig. 1.

Referring to said accompanying drawings by numeral, 1 designates thecenter post of the frame which has an upper bar connection 2 with thesteering head 3. A drop bar at connects the lower portion of head 3 withthe lower portion of post 1. A brace bar connects the upper portion ofdrop bar 4 with the upper portion of post 1. Drop bar 4 forms the basesupport for a motor and bar 5 forms a brace for the upper portion of themotor.

A fork extends rearwardly from the upper portion of bar 1, the spacedparallel arms 6 thereof terminating in pendent parallel bars 7 whichconnect with the outer ends of spaced parallel horizontal bars 8 theinner ends of which are provided with pendent portions which areconnected by a cross bar 9. Gross bar 9 has bar connections 10 with thecrank hanger 11 which is located at the junction of post 1 and drop bar4.

Fork arms 6 are provided with guide loops 12 on their faces, said loopsbeing op-' positely disposed and each having a bearing bar 13 slidabletherein. Said bars at their lower ends are provided with journals 14 forthe shaft 15 of wheel hub 16. The up per portions of said bearing bars13 are bent Specification of Letters Patent.

Patented Feb. 1 f, 1am.

Application filed March 30, 1910. Serial No. 552,381.

inward and reduced and project upward as indicated at 17, said reducedupper portions being connected by the bolts 18 and 19. Fork arms 6 areconnected adjacent their inner ends by a pivot bolt 20.

A flat leaf spring 21 has one end portion riveted or otherwise rigidlyfastened to the rear of post 1, said spring extending be tween fork arms6 and having an intermediate portion fastened to pivot bolt 20. Spring21 passes beneath and bears against pivot bolt 19 and the outer endportion is projected beyond bearing bars 13 and is returned in the formof a loop 22 and has its end pi votally connected to bolt 18.

The inner end portion of each bar 8 has one end of a leaf spring 23riveted or otherwise rigidly fastened to its under surface, the otherend of said springs being pivotally connected to the projecting ends ofaxle 15.

It will be seen from the foregoing that the improved frame provides astrong support for the motor and also means whereby the rear wheel isrigidly held against lat eral movement, but is permitted to have ayieldable vertical movement.

The action of the spring mounting for the rear wheel is as follows :Uponsaid wheel striking an obstruction, the shock will be transferred to hub16, which compresses springs 23 and causes bearing bars 13 to have avertical movement against the tension of loop 22 of spring 21, therebyabsorbing the shock.

What I claim as my invention is:

1. A motor cycle frame comprising a center post, a fork projectingrearward from the upper portion thereof, parallel bars projectingrearward from the lower portion of said post, the rear end of said barsand fork being connected. vertically arranged bear-- ing bars slidablymounted in said bars and adapted to carry a wheel axle, an upper springhaving one end fastened to said post and its other end pivotallyconnected to said bearing bars and a pair of springs having one endconnected to the lower parallel bars and their other ends adapted to bepivotally connected to an axle carried by the bearing bars.

2. A motor cycle frame comprising a motor support, a seat post and arear wheel frame, parallel bearing bars slidable in said rear wheelframe, a wheel axle carried by the lower ends of said bars springs projecting from the lower portion of the wheel frame and engaging said axle,and an upper spring also projecting from said post and engaging theupper portions of said bars.

3. A motor cycle frame comprising a motor support, a seat post, and arear Wheel frame, parallel bars slidable in said frame, said bars havingreduced upper portions, intermediate and end connections for saidreduced upper ends, an axle carried by the lower ends of said bars,spring connections between said axle and the lower portion of the wheelframe, and a spring carried by said .seat post and bearing against theend connection of said bars and pivotally connected to the intermediateconnection thereof.

4;. A motor cycle frame comprising a central post, a rearwardlyprojecting upper fork, a pair of parallel lower arms projectingrearwardly from said post, a pair of vertically slidable wheel carryingbearing bars carried by said fork, a spring having one end connected tosaid post and its other end pivotally connected to the upper portion ofsaid bearing bars and springs having one end connected to the lowerparallel bars and the other end adapted to be pivotally connected to theaxle of a wheel carried by the bearing bars.

In testimony whereof I hereunto aflix my signature in presence of twowitnesses.

EPHRAIM' MULLER.

WVitnesses:

H. C. SOHROEDER, F. P. SOHROEDER.

